I really want to see a mod in which the spacing of the notes are wider and doubles the speed at the same time. Think of it like Hyperspeed on Guitar Hero. Some songs are mapped very close together and moves very slow and I really think this would add the option of fixing those maps. There would be a very slight modifier since you are hitting the notes at the same time as before only that less notes on the screen, and the speed is visually faster. The songs would also remain at the same length so really there is no audio changes needed.